<?php
  //
  // +----------------------------------------------------------------------+
  // | PHP Version 4                                                        |
  // +----------------------------------------------------------------------+
  // | Copyright (c) 1997-2003 The PHP Group                                |
  // +----------------------------------------------------------------------+
  // | This source file is subject to version 2.0 of the PHP license,       |
  // | that is bundled with this package in the file LICENSE, and is        |
  // | available at through the world-wide-web at                           |
  // | http://www.php.net/license/2_02.txt.                                 |
  // | If you did not receive a copy of the PHP license and are unable to   |
  // | obtain it through the world-wide-web, please send a note to          |
  // | license@php.net so we can mail you a copy immediately.               |
  // +----------------------------------------------------------------------+
  // | Authors: Sterling Hughes <sterling@php.net>                          |
  // |          Stig Bakken <ssb@fast.no>                                   |
  // |          Tomas V.V.Cox <cox@idecnet.com>                             |
  // +----------------------------------------------------------------------+
  //
  // $Id: PEAR.php,v 1.52 2003/01/09 15:14:23 ssb Exp $
  //
   
  define('PEAR_ERROR_RETURN', 1);
  define('PEAR_ERROR_PRINT', 2);
  define('PEAR_ERROR_TRIGGER', 4);
  define('PEAR_ERROR_DIE', 8);
  define('PEAR_ERROR_CALLBACK', 16);
  define('PEAR_ZE2', (function_exists('version_compare') && version_compare(zend_version(), "2-dev", "ge")));
   
  if (substr(PHP_OS, 0, 3) == 'WIN') {
    define('OS_WINDOWS', true);
     define('OS_UNIX', false);
    define('PEAR_OS', 'Windows');
  } else {
    define('OS_WINDOWS', false);
    define('OS_UNIX', true);
    define('PEAR_OS', 'Unix'); // blatant assumption
  }
   
  $GLOBALS['_PEAR_default_error_mode'] = PEAR_ERROR_RETURN;
  $GLOBALS['_PEAR_default_error_options'] = E_USER_NOTICE;
  $GLOBALS['_PEAR_destructor_object_list'] = array();
  $GLOBALS['_PEAR_shutdown_funcs'] = array();
  $GLOBALS['_PEAR_error_handler_stack'] = array();
   
  ini_set('track_errors', true);
   
  /**
   * Base class for other PEAR classes.  Provides rudimentary
   * emulation of destructors.
   *
   * If you want a destructor in your class, inherit PEAR and make a
   * destructor method called _yourclassname (same name as the
   * constructor, but with a "_" prefix).  Also, in your constructor you
   * have to call the PEAR constructor: $this->PEAR();.
   * The destructor method will be called without parameters.  Note that
   * at in some SAPI implementations (such as Apache), any output during
   * the request shutdown (in which destructors are called) seems to be
   * discarded.  If you need to get any debug information from your
   * destructor, use error_log(), syslog() or something similar.
   *
   * IMPORTANT! To use the emulated destructors you need to create the
   * objects by reference, ej: $obj =& new PEAR_child;
   *
   * @since PHP 4.0.2
   * @author Stig Bakken <ssb@fast.no>
   * @see http://pear.php.net/manual/
   */
  class PEAR {
    // {{{ properties
     
    /**
     * Whether to enable internal debug messages.
     *
     * @var     bool
     * @access  private
     */
     
     
    var $_debug = false;
     
     
     
     
     
    /**
     * Default error mode for this object.
     *
     * @var     int
     * @access  private
     */
    var $_default_error_mode = null;
     
    /**
     * Default error options used for this object when error mode
     * is PEAR_ERROR_TRIGGER.
     *
     * @var     int
     * @access  private
     */
    var $_default_error_options = null;
     
    /**
     * Default error handler (callback) for this object, if error mode is
     * PEAR_ERROR_CALLBACK.
     *
     * @var     string
     * @access  private
     */
    var $_default_error_handler = '';
     
    /**
     * Which class to use for error objects.
     *
     * @var     string
     * @access  private
     */
    var $_error_class = 'PEAR_Error';
     
    /**
     * An array of expected errors.
     *
     * @var     array
     * @access  private
     */
    var $_expected_errors = array();
     
    // }}}
     
    // {{{ constructor
     
    /**
     * Constructor.  Registers this object in
     * $_PEAR_destructor_object_list for destructor emulation if a
     * destructor object exists.
     *
     * @param string $error_class  (optional) which class to use for
     *        error objects, defaults to PEAR_Error.
     * @access public
     * @return void
     */
    function PEAR($error_class = null) {
      $classname = get_class($this);
      if ($this->_debug) {
        print "PEAR constructor called, class=$classname\n";
      }
      if ($error_class !== null) {
        $this->_error_class = $error_class;
      }
      while ($classname) {
        $destructor = "_$classname";
        if (method_exists($this, $destructor)) {
          global $_PEAR_destructor_object_list;
          $_PEAR_destructor_object_list[] = &$this;
          break;
        } else {
          $classname = get_parent_class($classname);
        }
      }
    }
     
    // }}}
    // {{{ destructor
     
    /**
     * Destructor (the emulated type of...).  Does nothing right now,
     * but is included for forward compatibility, so subclass
     * destructors should always call it.
     *
     * See the note in the class desciption about output from
     * destructors.
     *
     * @access public
     * @return void
     */
    function _PEAR() {
      if ($this->_debug) {
        printf("PEAR destructor called, class=%s\n", get_class($this));
      }
    }
     
    // }}}
    // {{{ getStaticProperty()
     
    /**
     * If you have a class that's mostly/entirely static, and you need static
     * properties, you can use this method to simulate them. Eg. in your method(s)
     * do this: $myVar = &PEAR::getStaticProperty('myVar');
     * You MUST use a reference, or they will not persist!
     *
     * @access public
     * @param  string $class  The calling classname, to prevent clashes
     * @param  string $var    The variable to retrieve.
     * @return mixed   A reference to the variable. If not set it will be
     *                 auto initialised to NULL.
     */
    function &getStaticProperty($class, $var) {
      static $properties;
      return $properties[$class][$var];
    }
     
    // }}}
    // {{{ registerShutdownFunc()
     
    /**
     * Use this function to register a shutdown method for static
     * classes.
     *
     * @access public
     * @param  mixed $func  The function name (or array of class/method) to call
     * @param  mixed $args  The arguments to pass to the function
     * @return void
     */
    function registerShutdownFunc($func, $args = array()) {
      $GLOBALS['_PEAR_shutdown_funcs'][] = array($func, $args);
    }
     
    // }}}
    // {{{ isError()
     
    /**
     * Tell whether a value is a PEAR error.
     *
     * @param   mixed $data   the value to test
     * @access  public
     * @return  bool    true if parameter is an error
     */
    function isError($data) {
      return (bool)(is_object($data) && (get_class($data) == 'pear_error' || is_subclass_of($data, 'pear_error')));
    }
     
    // }}}
    // {{{ setErrorHandling()
     
    /**
     * Sets how errors generated by this DB object should be handled.
     * Can be invoked both in objects and statically.  If called
     * statically, setErrorHandling sets the default behaviour for all
     * PEAR objects.  If called in an object, setErrorHandling sets
     * the default behaviour for that object.
     *
     * @param int $mode
     *        One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
     *        PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE or
     *        PEAR_ERROR_CALLBACK.
     *
     * @param mixed $options
     *        When $mode is PEAR_ERROR_TRIGGER, this is the error level (one
     *        of E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
     *
     *        When $mode is PEAR_ERROR_CALLBACK, this parameter is expected
     *        to be the callback function or method.  A callback
     *        function is a string with the name of the function, a
     *        callback method is an array of two elements: the element
     *        at index 0 is the object, and the element at index 1 is
     *        the name of the method to call in the object.
     *
     *        When $mode is PEAR_ERROR_PRINT or PEAR_ERROR_DIE, this is
     *        a printf format string used when printing the error
     *        message.
     *
     * @access public
     * @return void
     * @see PEAR_ERROR_RETURN
     * @see PEAR_ERROR_PRINT
     * @see PEAR_ERROR_TRIGGER
     * @see PEAR_ERROR_DIE
     * @see PEAR_ERROR_CALLBACK
     *
     * @since PHP 4.0.5
     */
     
    function setErrorHandling($mode = null, $options = null) {
      if (isset($this)) {
        $setmode = &$this->_default_error_mode;
        $setoptions = &$this->_default_error_options;
      } else {
        $setmode = &$GLOBALS['_PEAR_default_error_mode'];
        $setoptions = &$GLOBALS['_PEAR_default_error_options'];
      }
       
      switch ($mode) {
        case PEAR_ERROR_RETURN:
        case PEAR_ERROR_PRINT:
        case PEAR_ERROR_TRIGGER:
        case PEAR_ERROR_DIE:
        case null:
        $setmode = $mode;
        $setoptions = $options;
        break;
         
        case PEAR_ERROR_CALLBACK:
        $setmode = $mode;
        if ((is_string($options) && function_exists($options)) || (is_array($options) && method_exists(@$options[0], @$options[1]))) {
          $setoptions = $options;
        } else {
          trigger_error("invalid error callback", E_USER_WARNING);
        }
        break;
         
        default:
        trigger_error("invalid error mode", E_USER_WARNING);
        break;
      }
    }
     
    // }}}
    // {{{ expectError()
     
    /**
     * This method is used to tell which errors you expect to get.
     * Expected errors are always returned with error mode
     * PEAR_ERROR_RETURN.  Expected error codes are stored in a stack,
     * and this method pushes a new element onto it.  The list of
     * expected errors are in effect until they are popped off the
     * stack with the popExpect() method.
     *
     * Note that this method can not be called statically
     *
     * @param mixed $code a single error code or an array of error codes to expect
     *
     * @return int     the new depth of the "expected errors" stack
     * @access public
     */
    function expectError($code = '*') {
      if (is_array($code)) {
        array_push($this->_expected_errors, $code);
      } else {
        array_push($this->_expected_errors, array($code));
      }
      return sizeof($this->_expected_errors);
    }
     
    // }}}
    // {{{ popExpect()
     
    /**
     * This method pops one element off the expected error codes
     * stack.
     *
     * @return array   the list of error codes that were popped
     */
    function popExpect() {
      return array_pop($this->_expected_errors);
    }
     
    // }}}
    // {{{ _checkDelExpect()
     
    /**
     * This method checks unsets an error code if available
     *
     * @param mixed error code
     * @return bool true if the error code was unset, false otherwise
     * @access private
     * @since PHP 4.3.0
     */
    function _checkDelExpect($error_code) {
      $deleted = false;
       
      foreach ($this->_expected_errors AS $key => $error_array) {
        if (in_array($error_code, $error_array)) {
          unset($this->_expected_errors[$key][array_search($error_code, $error_array)]);
          $deleted = true;
        }
         
        // clean up empty arrays
        if (0 == count($this->_expected_errors[$key])) {
          unset($this->_expected_errors[$key]);
        }
      }
      return $deleted;
    }
     
    // }}}
    // {{{ delExpect()
     
    /**
     * This method deletes all occurences of the specified element from
     * the expected error codes stack.
     *
     * @param  mixed $error_code error code that should be deleted
     * @return mixed list of error codes that were deleted or error
     * @access public
     * @since PHP 4.3.0
     */
    function delExpect($error_code) {
      $deleted = false;
       
      if ((is_array($error_code) && (0 != count($error_code)))) {
        // $error_code is a non-empty array here;
        // we walk through it trying to unset all
        // values
        foreach($error_code AS $key => $error) {
          if ($this->_checkDelExpect($error)) {
            $deleted = true;
          } else {
            $deleted = false;
          }
        }
        return $deleted ? true :
        PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
      } elseif (!empty($error_code)) {
        // $error_code comes alone, trying to unset it
        if ($this->_checkDelExpect($error_code)) {
          return true;
        } else {
          return PEAR::raiseError("The expected error you submitted does not exist"); // IMPROVE ME
        }
      } else {
        // $error_code is empty
        return PEAR::raiseError("The expected error you submitted is empty"); // IMPROVE ME
      }
    }
     
    // }}}
    // {{{ raiseError()
     
    /**
     * This method is a wrapper that returns an instance of the
     * configured error class with this object's default error
     * handling applied.  If the $mode and $options parameters are not
     * specified, the object's defaults are used.
     *
     * @param mixed $message a text error message or a PEAR error object
     *
     * @param int $code      a numeric error code (it is up to your class
     *                  to define these if you want to use codes)
     *
     * @param int $mode      One of PEAR_ERROR_RETURN, PEAR_ERROR_PRINT,
     *                  PEAR_ERROR_TRIGGER, PEAR_ERROR_DIE or
     *                  PEAR_ERROR_CALLBACK.
     *
     * @param mixed $options If $mode is PEAR_ERROR_TRIGGER, this parameter
     *                  specifies the PHP-internal error level (one of
     *                  E_USER_NOTICE, E_USER_WARNING or E_USER_ERROR).
     *                  If $mode is PEAR_ERROR_CALLBACK, this
     *                  parameter specifies the callback function or
     *                  method.  In other error modes this parameter
     *                  is ignored.
     *
     * @param string $userinfo If you need to pass along for example debug
     *                  information, this parameter is meant for that.
     *
     * @param string $error_class The returned error object will be
     *                  instantiated from this class, if specified.
     *
     * @param bool $skipmsg If true, raiseError will only pass error codes,
     *                  the error message parameter will be dropped.
     *
     * @access public
     * @return object   a PEAR error object
     * @see PEAR::setErrorHandling
     * @since PHP 4.0.5
     */
    function &raiseError($message = null,
      $code = null,
      $mode = null,
      $options = null,
      $userinfo = null,
      $error_class = null,
      $skipmsg = false) {
      // The error is yet a PEAR error object
      if (is_object($message)) {
        $code = $message->getCode();
        $userinfo = $message->getUserInfo();
        $error_class = $message->getType();
        $message = $message->getMessage();
      }
       
      if (isset($this) && isset($this->_expected_errors) && sizeof($this->_expected_errors) > 0 && sizeof($exp = end($this->_expected_errors))) {
        if ($exp[0] == "*" || (is_int(reset($exp)) && in_array($code, $exp)) || (is_string(reset($exp)) && in_array($message, $exp))) {
          $mode = PEAR_ERROR_RETURN;
        }
      }
      // No mode given, try global ones
      if ($mode === null) {
        // Class error handler
        if (isset($this) && isset($this->_default_error_mode)) {
          $mode = $this->_default_error_mode;
          $options = $this->_default_error_options;
          // Global error handler
        } elseif (isset($GLOBALS['_PEAR_default_error_mode'])) {
          $mode = $GLOBALS['_PEAR_default_error_mode'];
          $options = $GLOBALS['_PEAR_default_error_options'];
        }
      }
       
      if ($error_class !== null) {
        $ec = $error_class;
      } elseif (isset($this) && isset($this->_error_class)) {
        $ec = $this->_error_class;
      } else {
        $ec = 'PEAR_Error';
      }
      if ($skipmsg) {
        return new $ec($code, $mode, $options, $userinfo);
      } else {
        return new $ec($message, $code, $mode, $options, $userinfo);
      }
    }
     
    // }}}
    // {{{ throwError()
     
    /**
     * Simpler form of raiseError with fewer options.  In most cases
     * message, code and userinfo are enough.
     *
     * @param string $message
     *
     */
    function &throwError($message = null,
      $code = null,
      $userinfo = null) {
      if (isset($this)) {
        return $this->raiseError($message, $code, null, null, $userinfo);
      } else {
        return PEAR::raiseError($message, $code, null, null, $userinfo);
      }
    }
     
    // }}}
    // {{{ pushErrorHandling()
     
    /**
     * Push a new error handler on top of the error handler options stack. With this
     * you can easily override the actual error handler for some code and restore
     * it later with popErrorHandling.
     *
     * @param mixed $mode (same as setErrorHandling)
     * @param mixed $options (same as setErrorHandling)
     *
     * @return bool Always true
     *
     * @see PEAR::setErrorHandling
     */
    function pushErrorHandling($mode, $options = null) {
      $stack = &$GLOBALS['_PEAR_error_handler_stack'];
      if (isset($this)) {
        $def_mode = &$this->_default_error_mode;
        $def_options = &$this->_default_error_options;
      } else {
        $def_mode = &$GLOBALS['_PEAR_default_error_mode'];
        $def_options = &$GLOBALS['_PEAR_default_error_options'];
      }
      $stack[] = array($def_mode, $def_options);
       
      if (isset($this)) {
        $this->setErrorHandling($mode, $options);
      } else {
        PEAR::setErrorHandling($mode, $options);
      }
      $stack[] = array($mode, $options);
      return true;
    }
     
    // }}}
    // {{{ popErrorHandling()
     
    /**
     * Pop the last error handler used
     *
     * @return bool Always true
     *
     * @see PEAR::pushErrorHandling
     */
    function popErrorHandling() {
      $stack = &$GLOBALS['_PEAR_error_handler_stack'];
      array_pop($stack);
      list($mode, $options) = $stack[sizeof($stack) - 1];
      array_pop($stack);
      if (isset($this)) {
        $this->setErrorHandling($mode, $options);
      } else {
        PEAR::setErrorHandling($mode, $options);
      }
      return true;
    }
     
    // }}}
    // {{{ loadExtension()
     
    /**
     * OS independant PHP extension load. Remember to take care
     * on the correct extension name for case sensitive OSes.
     *
     * @param string $ext The extension name
     * @return bool Success or not on the dl() call
     */
    function loadExtension($ext) {
      if (!extension_loaded($ext)) {
        if (OS_WINDOWS) {
          $suffix = '.dll';
        } elseif (PHP_OS == 'HP-UX') {
          $suffix = '.sl';
        } elseif (PHP_OS == 'AIX') {
          $suffix = '.a';
        } elseif (PHP_OS == 'OSX') {
          $suffix = '.bundle';
        } else {
          $suffix = '.so';
        }
        return @dl('php_'.$ext.$suffix) || @dl($ext.$suffix);
      }
      return true;
    }
     
    // }}}
  }
   
  // {{{ _PEAR_call_destructors()
   
  function _PEAR_call_destructors() {
    global $_PEAR_destructor_object_list;
    if (is_array($_PEAR_destructor_object_list) && sizeof($_PEAR_destructor_object_list)) {
      reset($_PEAR_destructor_object_list);
      while (list($k, $objref) = each($_PEAR_destructor_object_list)) {
        $classname = get_class($objref);
        while ($classname) {
          $destructor = "_$classname";
          if (method_exists($objref, $destructor)) {
            $objref->$destructor();
            break;
          } else {
            $classname = get_parent_class($classname);
          }
        }
      }
      // Empty the object list to ensure that destructors are
      // not called more than once.
      $_PEAR_destructor_object_list = array();
    }
     
    // Now call the shutdown functions
    if (is_array($GLOBALS['_PEAR_shutdown_funcs']) AND !empty($GLOBALS['_PEAR_shutdown_funcs'])) {
      foreach ($GLOBALS['_PEAR_shutdown_funcs'] as $value) {
        call_user_func_array($value[0], $value[1]);
      }
    }
  }
   
  // }}}
   
  class PEAR_Error {
    // {{{ properties
     
    var $error_message_prefix = '';
    var $mode = PEAR_ERROR_RETURN;
    var $level = E_USER_NOTICE;
    var $code = -1;
    var $message = '';
    var $userinfo = '';
    var $backtrace = null;
     
    // }}}
    // {{{ constructor
     
    /**
     * PEAR_Error constructor
     *
     * @param string $message  message
     *
     * @param int $code     (optional) error code
     *
     * @param int $mode     (optional) error mode, one of: PEAR_ERROR_RETURN,
     * PEAR_ERROR_PRINT, PEAR_ERROR_DIE, PEAR_ERROR_TRIGGER or
     * PEAR_ERROR_CALLBACK
     *
     * @param mixed $options   (optional) error level, _OR_ in the case of
     * PEAR_ERROR_CALLBACK, the callback function or object/method
     * tuple.
     *
     * @param string $userinfo (optional) additional user/debug info
     *
     * @access public
     *
     */
    function PEAR_Error($message = 'unknown error', $code = null,
      $mode = null, $options = null, $userinfo = null) {
      if ($mode === null) {
        $mode = PEAR_ERROR_RETURN;
      }
      $this->message = $message;
      $this->code = $code;
      $this->mode = $mode;
      $this->userinfo = $userinfo;
      if (function_exists("debug_backtrace")) {
        $this->backtrace = debug_backtrace();
      }
      if ($mode & PEAR_ERROR_CALLBACK) {
        $this->level = E_USER_NOTICE;
        $this->callback = $options;
      } else {
        if ($options === null) {
          $options = E_USER_NOTICE;
        }
        $this->level = $options;
        $this->callback = null;
      }
      if ($this->mode & PEAR_ERROR_PRINT) {
        if (is_null($options) || is_int($options)) {
          $format = "%s";
        } else {
          $format = $options;
        }
        printf($format, $this->getMessage());
      }
      if ($this->mode & PEAR_ERROR_TRIGGER) {
        trigger_error($this->getMessage(), $this->level);
      }
      if ($this->mode & PEAR_ERROR_DIE) {
        $msg = $this->getMessage();
        if (is_null($options) || is_int($options)) {
          $format = "%s";
          if (substr($msg, -1) != "\n") {
            $msg .= "\n";
          }
        } else {
          $format = $options;
        }
        die(sprintf($format, $msg));
      }
      if ($this->mode & PEAR_ERROR_CALLBACK) {
        if (is_string($this->callback) && strlen($this->callback)) {
          call_user_func($this->callback, $this);
        } elseif (is_array($this->callback) && sizeof($this->callback) == 2 && is_object($this->callback[0]) && is_string($this->callback[1]) && strlen($this->callback[1])) {
          @call_user_func($this->callback, $this);
        }
      }
    }
     
    // }}}
    // {{{ getMode()
     
    /**
     * Get the error mode from an error object.
     *
     * @return int error mode
     * @access public
     */
    function getMode() {
      return $this->mode;
    }
     
    // }}}
    // {{{ getCallback()
     
    /**
     * Get the callback function/method from an error object.
     *
     * @return mixed callback function or object/method array
     * @access public
     */
    function getCallback() {
      return $this->callback;
    }
     
    // }}}
    // {{{ getMessage()
     
     
    /**
     * Get the error message from an error object.
     *
     * @return  string  full error message
     * @access public
     */
    function getMessage() {
      return ($this->error_message_prefix . $this->message);
    }
     
     
    // }}}
    // {{{ getCode()
     
    /**
     * Get error code from an error object
     *
     * @return int error code
     * @access public
     */
    function getCode() {
      return $this->code;
    }
     
    // }}}
    // {{{ getType()
     
    /**
     * Get the name of this error/exception.
     *
     * @return string error/exception name (type)
     * @access public
     */
    function getType() {
      return get_class($this);
    }
     
    // }}}
    // {{{ getUserInfo()
     
    /**
     * Get additional user-supplied information.
     *
     * @return string user-supplied information
     * @access public
     */
    function getUserInfo() {
      return $this->userinfo;
    }
     
    // }}}
    // {{{ getDebugInfo()
     
    /**
     * Get additional debug information supplied by the application.
     *
     * @return string debug information
     * @access public
     */
    function getDebugInfo() {
      return $this->getUserInfo();
    }
     
    // }}}
    // {{{ getBacktrace()
     
    /**
     * Get the call backtrace from where the error was generated.
     * Supported with PHP 4.3.0 or newer.
     *
     * @param int $frame (optional) what frame to fetch
     * @return array Backtrace, or NULL if not available.
     * @access public
     */
    function getBacktrace($frame = null) {
      if ($frame === null) {
        return $this->backtrace;
      }
      return $this->backtrace[$frame];
    }
     
    // }}}
    // {{{ addUserInfo()
     
    function addUserInfo($info) {
      if (empty($this->userinfo)) {
        $this->userinfo = $info;
      } else {
        $this->userinfo .= " ** $info";
      }
    }
     
    // }}}
    // {{{ toString()
     
    /**
     * Make a string representation of this object.
     *
     * @return string a string with an object summary
     * @access public
     */
    function toString() {
      $modes = array();
      $levels = array(E_USER_NOTICE => 'notice',
        E_USER_WARNING => 'warning',
        E_USER_ERROR => 'error');
      if ($this->mode & PEAR_ERROR_CALLBACK) {
        if (is_array($this->callback)) {
          $callback = get_class($this->callback[0]) . '::' . $this->callback[1];
        } else {
          $callback = $this->callback;
        }
        return sprintf('[%s: message="%s" code=%d mode=callback '. 'callback=%s prefix="%s" info="%s"]',
          get_class($this), $this->message, $this->code,
          $callback, $this->error_message_prefix,
          $this->userinfo);
      }
      if ($this->mode & PEAR_ERROR_PRINT) {
        $modes[] = 'print';
      }
      if ($this->mode & PEAR_ERROR_TRIGGER) {
        $modes[] = 'trigger';
      }
      if ($this->mode & PEAR_ERROR_DIE) {
        $modes[] = 'die';
      }
      if ($this->mode & PEAR_ERROR_RETURN) {
        $modes[] = 'return';
      }
      return sprintf('[%s: message="%s" code=%d mode=%s level=%s '. 'prefix="%s" info="%s"]',
        get_class($this), $this->message, $this->code,
        implode("|", $modes), $levels[$this->level],
        $this->error_message_prefix,
        $this->userinfo);
    }
     
    // }}}
  }
   
  register_shutdown_function("_PEAR_call_destructors");
   
  /*
   * Local Variables:
   * mode: php
   * tab-width: 4
   * c-basic-offset: 4
   * End:
   */
?>
